1. operating(a = adj.ppl) - involved in a kind of operation; "the operating conditions of the oxidation pond"
2. operating(s = adj.all) in operation, operational - being in effect or operation; "de facto apartheid is still operational even in the `new' African nations"; "bus service is in operation during the emergency"; "the company had several operating divisions"
1.
2. having an effect or influence. [WordNet 1.5]
chief operating officer, disk operating system, microsoft disk operating system, operating budget, operating capability, operating capital, operating cost, operating expense, operating instructions, operating microscope, operating procedure, operating room, operating statement, operating surgeon, operating system, operating table, operating theater, operating theatre, standard operating procedure, standing operating procedure, unix operating system